Date: 2007nov3
Updated: 2011jun15
Q. Is there any Linux stuff you recommend not using?
A. Yes, here a partial list.
Obsolete Replacement Comment
-------- ----------- -------
compress gzip gzip compresses more
gzip bzip2 bzip2 does a better job for large files
sendmail postfix sendmail's config file is nuts
telnet ssh telnet isn't safe
up2date yum yum is faster, more flexible
perl php perl is great but php is better for websites
K&R C ANSI C ANSI has function prototypes
cc gcc The GNU C computer is nicer
courier popd dovecot Fedora switched
proftpd vsftpd Fedora switched
init / upstart systemd Fedora switched
ssh1 ssh2 ssh1 has been compromised - disable in /etc/ssh/ssh_conf
MD5 SHA1 The MD5 hash has some collisions
SHA1 SHA2 SHA1 has some collisions
DES AES DES is getting hackable
WEP WPA2 (for wireless security) WEP was hacked
make jam Make is too labour-intensive
localtime() localtime_r() localtime() isn't thread safe
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